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. 2021 Jul 20;16:4901–4911. doi: 10.2147/IJN.S319089

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© 2021 Zhang et al.

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(A) The absorption spectrum of PTM NPs (200 μg/mL) in Water. (B) DLS of PTM NPs (10 μg/mL) insert SEM and TEM of PTM NPs. (C) Photothermal heating curves of PTM NPs (80 μg/mL) irradiated for 10 min using a 808 nm laser at varied power densities (0, 0.5, 1.0, 1.5, and 2.0 W/cm²). (D) The temperature evolution of PTM NPs with different concentrations under 808 nm laser irradiation (1.5 W/cm², 10 min). (E) Temperature elevation of PTM NPs (120 μg/mL) under five on/off cycles (1.0 W/cm²). (F) Corresponding near infrared photographs of PTM NPs (80 μg/mL) under NIR laser irradiation (808nm, 1.5 W/cm², 5 min). (G) HOMO and LUMO calculated by DFT at the B3LYP/6-31G (d,p) basis set.